1977 m880 ambulance

[rick martin]

wiring issue. started with dash gauges not working now no power to dash.any help with schematics would be greatly appreciatedthanks in advance

 

[MWMULES]

Hate to send you to another forum but it's the same as civi , all your answers should be here or at least the were for me. http://www.madelectrical.com/electricaltech/amp-gauges2.shtml

http://ramchargercentral.com/vehicl...e-condition-trouble-shoot-and-ammeter-bypass/

 

[overlordofmars]

Take it from a DODGE expert, its going to be a problem at your bulkhead wiring connector at the fire wall, or the ****ty Ammeter just blew its connections ! I have owned over a dozen 1976 through 1982 dodge trucks with the ****ty design. ALL the power for the truck goes through a weak spade connection at the bulkhead connector then through the ammeter to the truck. I have MELTED a few instrument clusters overloading the weak connections to the ammeter at the back of the cluster.

 

[overlordofmars]

Here is a link, if you want PM me and I will give you my phone number. I can talk you through a ammeter bypass and how to convert to a volt meter like the rest of the modern world.

http://www.madelectrical.com/electricaltech/amp-gauges.shtml

 

[overlordofmars]

 

[overlordofmars]

Check this connector first !

 

[overlordofmars]

 

[steelandcanvas]

Pull the instrument cluster and disconnect the ammeter, tie the red and black from the meter together and insulate well. Check bulkhead connection and repair accordingly.

 

[N1265]

http://www.ebay.com/itm/1977-77-Dod...ash=item542b2f3501:g:TMEAAOSwcBhWXgS-&vxp=mtr

You are gonna need something like this if you plan on keeping that truck on the road...

 

[Super Warrantman]

TM 9-2320-266-20 & TM 9-2320-266-34 are the TMs you need. They both have wiring diagrams in them and are available to download from this site as pdf files.

 

[Amer-team]

I have had the M886 for a dozen years. Had an intermittent starting issue that as stated above ended up being a bad ammeter gauge. Of all things a paper clip had fallen on the terminals of the gauge and it would cause problems. I was stymied and took it to a local mechanic and when he finally figured it out was giving me a hard time. Bypassed ammeter and no problems since. But was also counseled by a friend that was a Dodge guy to do bypass surgery on the firewall block with the main power line. that takes care of the issue that Overlordofmars pictured above.